:root {
  font-family: "PingFang SC", arial, helvetica, STHeitiSC-Light, "Heiti SC", droidsansfallback, dengxian, "microsoft yahei";
  line-height: 1.5;
  font-weight: 400;

  color-scheme: light dark;
  color: rgba(255, 255, 255, 0.87);
  background-color: #fff;

  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
body {
  margin: 0;
  padding: 0;
}